Eivi balm ing-syr inge



(No Model.)

H. N. SIEGENTHALBR & E. CRAIG.

EMBALMING SYRINGE.

No. 337,707. Patented Mar. 9, 1886.

Tiyi 4 UNITE STATES HARVEY N. SIEGENTHALEB AND ELLS /VORTH CRAIG, OF SPRINGFIELD, OHIO.-

EMBALMlNG-SYRINGE.

SPECIFICATION forming part of Letters Patent No. 337,707, dated March 9, 1886.

7 Application filed August 24, 1885. Serial No. 175,238. (No model.)

To all whom it may concern.-

Be it known that we, HARVEY N. SIEGEN- THALER and ELLSWORTH CRAIG, citizens of the United States, residing at Springfield, in the county of Clark and State of Ohio, have invented certain new and useful Improvements in Embalming-Syringes, of which the following is a specification.

Our invention relates to a doubleacting pumpsyringe; and the object of our invention is to provide a pump-syringe capable ofthrowing a uniform or constant stream, said syringe being simple and cheap in construction, and particularly adapted for forcing preserving-liquids into corpses.

Our invention consists in the constructions and combinations of parts hereinafter described, and pointed out in the claims.

In the accompanying drawings, Figure 1 is a longitudinal sectional view of asyringe embodying our invention. Fig. 2 is a plan view of the clamping device, which will be referred to hereinafter. Fig. 3 is a transverse sectional view showing the lower piston.

In the said drawings, A represents the main cylinder or barrel of the syringe, which is made of hard rubber or other suitable mate terial, and is provided on one side near the middle with an outlet-opening, A, having a discharge-nozzle, A In the upper part of the cylinder A and extending downwardly therein to a point opposite, or nearly so, the exit or discharge opening A, is a smaller cylinder, B, the capacity of which is about one half the capacity of that portion of the barrel A which is below the said cylinder B.

The upper part of the cylinder B is provided with a circular cap or cover, B, which projects outwardly at right angles to the said cylinder, and is provided on its outer edge with an annular depending flange, B which is internally screw-threaded and adapted to screw onto the top of the barrel A, which is correspondingly screwthreaded and shouldered down to make a finish therewith. A strip of packing material, C, is preferably placed between the top of the barrel A and the cap, as shown. The upper cylinder, B, is thus supported firmly in the barrel A concentric therewith, the top of the barrel being at the same time tightly closed, thus forming an air space or chamber in the top of the said barrel above the opening A.

The lower end of the barrel A is closed by a cap, D, which is provided with an'inlet or supply opening, D, closed on the inside by an inwardly-opening valve, E, of ordinary construction, preferably of leather.

Extending longitudinally through the center ofthe barrel A and upper cylinder, B, is a plunger-rod, H, which carries the plunger-s or pistons L M, adapted to fit the respective cylinders A and B. This plunger or piston rod H is preferably made of hard rubber and adapted to be inserted from the bottom through an opening in the top of the upper cylinder, B, and is provided at its upper end with a detachable handle, H, preferably of the same material, tapped out and screwed thereon. The piston L is formed by constructing the rod H with a collar or shoulder, L, solid therewith, said collar being tapered on the under side, as shown. Below the collar L the rod H is screw-threaded and provided with a variable sleeve or collar, L which is screwed thereon and beveled on its upper side to correspond with the stationary collar L.

The variable eollar or sleeve L is provided on its lower side with an extension or neck, L on the lower edge of which is an annular flange, as shown, for the purpose of adjusting said collar, as hereinafter set forth. Between the beveled or tapered edges of the respective collars L and L we place a packing-ring, L, of leather or other flexible material.

The lower piston, M, is composed of two circular disks, M M each provided with a series of openings, M", therein. The lower and upper edges of the respective disks are tapered, as shown, and adapted to receive between the same a suitable packing-ring, M. The lower end of the plunger-rod H is turned down, forming a shoulder and projection, H The upper disk, M, is provided with a central opening adapted to slip loosely over the projection H while the lower disk, M, is tapped out and adapted to screw onto said projection H, which is correspondingly screw-threaded. Between the upper disk, MI, and the shoulder on the plunger rod H is a flexible disk, M preferably of The syringe as thus described, it will be A leather, adapted on the upstroke of the piston M to close the openings M in the said disk M, said flexible disk M being raised at its outer edges, so as to uncover said openings as the piston is making its downward stroke.

In assembling the parts of the syringe the plunger-rod, with the pistons L and M thereon, and with the handle removed, is inserted through the opening in the top of the upper cylinder, B, until the piston Lis brought into the said cylinder. The handle H is then secured to the said rod and the piston L adjusted to fit the cylinder by turning the variable collar L up against the packing-ring by means of the extension or neck L on said collar, and thus expanding said packing. The lower or main piston is then inserted into the barrel A, and the inner cylinder secured in its place therein by screwing the cap B on the upper end of the said barrel. The lower piston may be adjusted to fit the barrel A by holding the lower disk, M, and turning the rod H, thus screwing the neck or projection H into or out of said disk and expanding or contracting the packing-ring by drawing together or separating the disks M M Secured to the barrel of the syringe, preferably just below the nozzle A, is a tableclamp, N, by means of which the syringe may be fastened toatable or other convenient place while being operated. This is preferably made of metal, and consists of a jaw or clamp, N

having a clamp-screw, N, adapted to be secured around the barrel A by a flexible metallic ring or rings, N, and a screw, N, as shown in Figs. 1 and 3. The connections are made to the supply and from the outlet nozzles in the usual way,preferably by rubber tubing.

The operation of the pump is as follows: Upon the first upstroke of the plunger-rod theliquid is drawn into the barrel in the usual way through the lower valve, E. Upon the downstroke the'liquid is forced through the lower piston, and upon each successive upstroke half the liquid is discharged through the noz zle and half received in the upper cylinder, to be discharged by the downstroke, thus securing an even or constant flow from the nozzle. The air space or chamber around the upper cylinder forms a cushion to relieve the barrel from any undue strain or pressure and prevent jerking in the discharge.

seen, is very simple and compact in construction and efficient in operation.

We are aware of the constructions shown in Patents No. 33, 885, December 10,1861, Thomas Holmes, and No. 151,693, Fox and Edwards,

June 9, 1874. .We do not therefore claim the constructions therein shown; but

We claim as our invention 1. A double-acting syringe consisting of the plain cylindrical barrel with a discharge-nozzle therein, an inner cylinder provided at the top with an outwardly-proj ecting flange adapted to screw onto the top of the said barrel and form a cap therefor, the plunger-rod carrying thetwo pistons thereon and projecting through an opening in the top of the inner cylinder, and provided with a removable handle, and the lower cap on said barrel being provided with an inlet-valve, substantially as set forth. 2. The combination, in a double acting syringe,with the plain outside cylindrical casing, the inner cylinder supported therein, and the plunger-rod carrying pistons for said cylinders, respectively, of atable-clamp with rings adapted to be secured around said barre], substantially as specified.

3. The combination,with thecylindrical barrel A and inner cylinder, B, of the plunger-rod H, provided withalower plunger, M, and having the stationary collar L',variable collar L, with projection L and packing-ring L, substantially as set forth.

4. The combination, with the outer barrel and inner cylinder supported therein, of the plunger-rod having upper piston,L, and turned down and forming a projection, H, which is screw-threaded and shouldered at its lower end, providedthereon with the circular disks M M", having openings M therein, the flexible disk or washer M adapted to close said openings, and the packing-ring M between said disks, substantially as specified.

In testimony whereof we have hereunto set our hands this 7th day of August, A. D. 1885.

HARVEY N. SIEGENTHALER. ELLSWORTH CRAIG.

Witnesses:

PAUL A. STALEY, F. WILLrs BARNES. 

